COMPARING REJECTIONS OF INEQUITYIN
INDIA AND PERU
Lab 4: Data Analysis
Conditions: Apparatus:
“DI”: Disadvantageous Inequity The decider gets 1
Skittle, the other child gets 4
“AI”: Advantageous Inequity The decider gets 4
Skittles, the other child gets 1
The decider can choose to pull the green handle and accept the offer, or pull the red handle and reject it
Refresher:
Refresher:
Blake and McAuliffe (2011) studied American children, aged 4-8
Findings:
as age increased, so did rejections of DI Less likely to accept a bad offer as they got older
Only 8-yr-olds were much more likely to reject AI Suddenly at age 8, they would not accept unequal offers,
even in their favor
Blake & McAuliffe’s findings
4 5 6 7 80
1
2
3
4
5
6
Disadvantageous Inequity (DI)
Age in Years
Rej
ecti
ons
Blake & McAuliffe’s findings:
4 5 6 7 80
1
2
3
4
5
6
Advantageous Inequity (AI)
Age in Years
Rej
ecti
ons
Our Aim:
Analyze similar data from Peru and India, and compare the results with the U.S. sample
With SPSS, we will investigate:
If increased age relates to more rejections of DI in both of these countries
If the same shift exists at age 8, for rejecting AI, in both countries
If these countries differ in number of DI and AI rejections
Data Analysis
We will conduct 6 independent t-tests today:
These will tell us if two groups are significantly different from one another
This way we can compare ages, and we can compare cultures, in terms of number of rejections
We have two age groups (6-7 vs. 8-9)
We have two cultures (India vs. Peru)
First t-test:
India
6-7 Years 8-9 Years
# DI Trials Rejected
Second t-test:
India
6-7 Years 8-9 Years
# AI Trials Rejected
Third t-test:
Peru
6-7 Years 8-9 Years
# DI Trials Rejected
Fourth t-test:
Peru
6-7 Years 8-9 Years
# AI Trials Rejected
Fifth t-test:
Total #DI Rejections
India Peru
Sixth t-test:
Total #AI Rejections
India Peru
Using SPSS:
Right-click and save the Data File to the Desktop Do not try to open from here
Dbl-click WebFX Applications on Desktop Look for SPSS folder
Dbl-click SPSS icon
“Open an Existing Data Source” “Look in”: Desktop
• Select the Data file
Doing a t-test in SPSS
At the top, click “Analyze” “Compare
Means” “Independent
Samples t-test”
Doing a t-test in SPSS
Select your “Test Variable” from the list, and click the top arrow
Select your “Grouping Variable” from the list, and click the bottom arrow
*Handout tells you which to select
Doing a t-test in SPSS
Click “Define Groups”
Enter in the values, as directed on handout
What to Note in SPSS output
Today:
Complete the handout, reporting your Results from the 6 t-tests
Submit before leaving